evans



F. EVANS.

Pand Feb. 22,1921.

2 SHEETS-SIKU 2.

INVENTOR UNITED STATES PATENT OFFICE.

FRED EvANs, or SUMMIT, NEW JERSEY, AssIGNoR 'ro HARrsHoRNE aABAr'rELLl,

or NEW YORK, N. Y., A FIRM comosED or EDWARD c. HARTsHom BATTELLE, AND FREDERICK W. LUDWIG. i*

MOTORCYCLE.

Specification of Letters Patent.

Patented Eeb. -2 z, '1921.

Application led November 23, 1918. Serial lo. 132,947.

T 0 all fwLw/z t may concern Be it known that I, Fimo EvnNs, residing at Summit, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Motorcycles, of which the followingr is a specification.

This invention relates to a motorcycle, and the object thereof is to provide a simple, practiial and efficient supporting means whereby a motor of standard form and'construction may be mounted upon a bicycle or the like and controlled for driving the wheels of the bicycle.

A more detailed object is to provide a motor supporting frame adapted to be pivotally connected to the frame of the bicycle and to carry a traction wheel driven by the motor and movable with the supporting frame into and out of driving connection with the wheel of the bicycle.

A further detailed object is to provide means, controlled *from the handle bars of the bicycle, for moving the traction wheel into and out of engagement with the wheel of the bicycle, and to adapt said control nieans for locking the traction wheel in at least one of its positions.

Other objects and aims of the invention, more or less speciiic than those referred t0 abivc, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles, constituting the invention; and the scope of protection contemplated will be indicated in the appended claim.

In the accompanying drawings which are to be taken as a part of this specification, and in which I have shown a merely preferred form of embodiment of the invention:

Figure 1 is a side elevational view of a device constructed in accordance with this invention. showingr the same in position upon a bicycle; and

Fig. 2 is a vertical sectional view taken upon the plane of line H-H of Fig. 1.

Referring to the drawings for a detailed description of the structure which is illustrated therein, the reference character L indicates the motor. It is of standard form and comprises a cylinder part 1 and a crank casing Q. The crank shaft 3 carries a drive pulley 4.

The reference character .A A, the

motor supporting frame. This is o comprising a vertical arm 5 and a horizontal arm 6. This support connected to .a bracket which is clam in position upon the forks 8 of the bicycle, a

pivot pin 9 extending through a rtwn af the supporting frame at the l l "between its vertical and horizontal arms ing the bracket 7. Y

he vertical arm 5 is provided suitable attaching lugs 10 and 11 for aging portions of the motor L whereby tbnx the motor in position upon the supporting frame. v The horizontal arm 6 carries a shaft 19 at its free end, said shaft having a. pulley 13 fixed thereon connected by a exible -belt frame is pivotl or the like 14 with the pulley 4 whereby #o I drive the shaft 12 from the crank shaftof i the motor.

A traction wheel 15 is .also to the shaft 12 and this .is disposed to rectly above the upper surface of wheel H, said traction wheel bei preferably slightly concaved, as illustrat, so as to better center itself upon the wheel H when driving.

Any suitable means may be employed for swmgmg the supporting frame about itl pivotal mounting in the bracket 7 for-causing the drive wheel 15 to move into und out' of engaement with the iupp mince if the wheel prises a link 16 which is connected to the upper end of the frame 5 and also to a nger 17 fixed upon one of the hand grips 18 of the handle bars 19. The hand grip 18 is rotatably mounted upon the handle bar 19 and is adapted to be rotated for movin the upper end of the arm 5 backwardly andv forwardly at will. When the upper end of the arm 5 is moved forwardly the drive wheel 15 is moved against the wheel of the bicycle for driving said Wheel, whereas when the upper end of the arm 5 is drawn backwardly the wheel 15 is lifted entirelyfout of engagement with the bicycle wheel.

In order that the upper end of the arm 5 may be locked in its backward position the link 16 is preferably connected to said upper end through the medium of a bell crank latch 20. said latch being pivotally connected by its central pivot to the arm 5 and the link and preferably this means com-l movement untilthe hand grip Y18kr is again 1G being pivotally connected to one arm ofthe latch, the second varm of thelatch having '.Vaftooth21v thereon larranged toY be snapped into a pocket 22 formed upon a bracket 23 when the arm 5 reaches its back- Vward position. At all other times the tooth 21 rubs against a smooth surface 24: formed l,upon the :bracket 23.'

By this means when the hand grip18 isA rotated to draw back the' arm 5 the tooth 21' is pressed against the surface 24 and caused Y to slide' backwardly therealong until it finallysnaps into, the pocket 23. The tooth will v'remain in engagement with thewalls of the pocket and will thereby constitutea lock to` retain the arm 5 against forward rotated Vto force the link 16 forwardly. TWhen thellink 16 is forced forwardly the bell crank latch Vwill `be rotated about its pivot andthe tooth will be withdrawn from i" the pocket and the arm 5 moved forwardly.

l is not necessary to change the shape Aor ar- It should be pointed out that by the use of this invention anyvsuitablc standard motor may be employed, that Vis to say, that Ait i rangement of any of the parts ofthe motor motor and the traction wheel 15 provides just the right degree of flexibility between the motor and the traction wheel.f The 'slight but `continual momentary variations inthe speedof rotationl of the crank shaft are absorbed before reaching the traction wheel, and as moother'and more approved driving action is obtained upon the bicycle wheel.

Further, as clearly shown in Fig. 2,Y this Y kinvention provides that the traction wheel 15 andthe motor *areY arranged substan tially in a common vertical plane directly above the peripheral center of the bicycle' wheel. This obviously provides for'an equal distribution of weight so that the operation of steering the bicycle is not affected. A very compact and attractive appearance also results.

As many changes could be made in this scope of the following claim, it is intended that all matter contained in the above d escription or shown in kthe accompanying drawing shall be interpreted as'illustrative only and' not ina limiting sense.

, Having thus described my invention what` I claim as new and desire to secure by Letters Patent is:

' Adevice of the class described, comprisV ing an L-shaped supporting member having parts for connecting a motorthereto, means at the angle between the arms of the L by means of which the supporting member may be pivotally connected to a bicycle frame, a traction wheel at the outer end of one of the arms of theL disposed for engaging'the bicycle Wheel adapted to be operatively con# lnected to the motor, and means connected to the remaining arm of the L for swinging said supporting member about its pivotal construction withoutV departing from the mounting to dispose thetraction wheel into and out of engagement with the wheel of the bicycle.

ln testimony whereof I affix my signature in the presence of two witnesses.

FRED Evans.V

Witnesses:

L. Gnssronn HANDY, EMMA WEINBERG. 

